docs/source/field-to-grid-dd.html

   1 <html>\r
   2 <head>\r
   3   <title>The source code</title>\r
   4     <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />\r
   5     <script type="text/javascript" src="../resources/prettify/prettify.js"></script>\r
   6 </head>\r
   7 <body  onload="prettyPrint();">\r
   8     <pre class="prettyprint lang-js">// A DropZone which cooperates with DragZones whose dragData contains\r
   9 // a "field" property representing a form Field. Fields may be dropped onto\r
  10 // grid data cells containing a matching data type.\r
  11 Ext.ux.CellFieldDropZone = Ext.extend(Ext.dd.DropZone, {\r
  12     constructor: function(){},\r
  13 \r
  14 //  Call the DropZone constructor using the View's scrolling element\r
  15 //  only after the grid has been rendered.\r
  16     init: function(grid) {\r
  17         if (grid.rendered) {\r
  18             this.grid = grid;\r
  19             this.view = grid.getView();\r
  20             this.store = grid.getStore();\r
  21             Ext.ux.CellFieldDropZone.superclass.constructor.call(this, this.view.scroller);\r
  22         } else {\r
  23             grid.on('render', this.init, this);\r
  24         }\r
  25     },\r
  26 \r
  27 //  Scroll the main configured Element when we drag close to the edge\r
  28     containerScroll: true,\r
  29 \r
  30     getTargetFromEvent: function(e) {\r
  31 //      Ascertain whether the mousemove is within a grid cell\r
  32         var t = e.getTarget(this.view.cellSelector);\r
  33         if (t) {\r
  34 \r
  35 //          We *are* within a grid cell, so ask the View exactly which one,\r
  36 //          Extract data from the Model to create a target object for\r
  37 //          processing in subsequent onNodeXXXX methods. Note that the target does\r
  38 //          not have to be a DOM element. It can be whatever the noNodeXXX methods are\r
  39 //          programmed to expect.\r
  40             var rowIndex = this.view.findRowIndex(t);\r
  41             var columnIndex = this.view.findCellIndex(t);\r
  42             if ((rowIndex !== false) && (columnIndex !== false)) {\r
  43                 return {\r
  44                     node: t,\r
  45                     record: this.store.getAt(rowIndex),\r
  46                     fieldName: this.grid.getColumnModel().getDataIndex(columnIndex)\r
  47                 }\r
  48             }\r
  49         }\r
  50     },\r
  51 \r
  52 //  On Node enter, see if it is valid for us to drop the field on that type of column.\r
  53     onNodeEnter: function(target, dd, e, dragData) {\r
  54         delete this.dropOK;\r
  55         if (!target) {\r
  56             return;\r
  57         }\r
  58 \r
  59 //      Check that a field is being dragged.\r
  60         var f = dragData.field;\r
  61         if (!f) {\r
  62             return;\r
  63         }\r
  64 \r
  65 //      Check whether the data type of the column being dropped on accepts the\r
  66 //      dragged field type. If so, set dropOK flag, and highlight the target node.\r
  67         var type = target.record.fields.get(target.fieldName).type;\r
  68         switch (type) {\r
  69             case 'float':\r
  70             case 'int':\r
  71                 if (!f.isXType('numberfield')) {\r
  72                     return;\r
  73                 }\r
  74                 break;\r
  75             case 'date':\r
  76                 if (!f.isXType('datefield')) {\r
  77                     return;\r
  78                 }\r
  79                 break;\r
  80             case 'boolean':\r
  81                 if (!f.isXType('checkbox')) {\r
  82                     return;\r
  83                 }\r
  84         }\r
  85         this.dropOK = true;\r
  86         Ext.fly(target.node).addClass('x-drop-target-active');\r
  87     },\r
  88 \r
  89 //  Return the class name to add to the drag proxy. This provides a visual indication\r
  90 //  of drop allowed or not allowed.\r
  91     onNodeOver: function(target, dd, e, dragData) {\r
  92         return this.dropOK ? this.dropAllowed : this.dropNotAllowed;\r
  93     },\r
  94 \r
  95 //   nhighlight the target node.\r
  96     onNodeOut: function(target, dd, e, dragData) {\r
  97         Ext.fly(target.node).removeClass('x-drop-target-active');\r
  98     },\r
  99 \r
 100 //  Process the drop event if we have previously ascertained that a drop is OK.\r
 101     onNodeDrop: function(target, dd, e, dragData) {\r
 102         if (this.dropOK) {\r
 103             target.record.set(target.fieldName, dragData.field.getValue());\r
 104             return true;\r
 105         }\r
 106     }\r
 107 });\r
 108 \r
 109 //  A class which makes Fields within a Panel draggable.\r
 110 //  the dragData delivered to a coooperating DropZone's methods contains\r
 111 //  the dragged Field in the property "field".\r
 112 Ext.ux.PanelFieldDragZone = Ext.extend(Ext.dd.DragZone, {\r
 113     constructor: function(){},\r
 114 \r
 115 //  Call the DRagZone's constructor. The Panel must have been rendered.\r
 116     init: function(panel) {\r
 117         if (panel.nodeType) {\r
 118             Ext.ux.PanelFieldDragZone.superclass.init.apply(this, arguments);\r
 119         } else {\r
 120             if (panel.rendered) {\r
 121                 Ext.ux.PanelFieldDragZone.superclass.constructor.call(this, panel.getEl());\r
 122                 var i = Ext.fly(panel.getEl()).select('input');\r
 123                 i.unselectable();\r
 124             } else {\r
 125                 panel.on('afterlayout', this.init, this, {single: true});\r
 126             }\r
 127         }\r
 128     },\r
 129 \r
 130     scroll: false,\r
 131 \r
 132 //  On mousedown, we ascertain whether it is on one of our draggable Fields.\r
 133 //  If so, we collect data about the draggable object, and return a drag data\r
 134 //  object which contains our own data, plus a "ddel" property which is a DOM\r
 135 //  node which provides a "view" of the dragged data.\r
 136     getDragData: function(e) {\r
 137         var t = e.getTarget('input');\r
 138         if (t) {\r
 139             e.stopEvent();\r
 140 \r
 141 //          Ugly code to "detach" the drag gesture from the input field.\r
 142 //          Without this, Opera never changes the mouseover target from the input field\r
 143 //          even when dragging outside of the field - it just keeps selecting.\r
 144             if (Ext.isOpera) {\r
 145                 Ext.fly(t).on('mousemove', function(e1){\r
 146                     t.style.visibility = 'hidden';\r
 147                     (function(){\r
 148                         t.style.visibility = '';\r
 149                     }).defer(1);\r
 150                 }, null, {single:true});\r
 151             }\r
 152 \r
 153 //          Get the data we are dragging: the Field\r
 154 //          create a ddel for the drag proxy to display\r
 155             var f = Ext.getCmp(t.id);\r
 156             var d = document.createElement('div');\r
 157             d.className = 'x-form-text';\r
 158             d.appendChild(document.createTextNode(t.value));\r
 159             Ext.fly(d).setWidth(f.getEl().getWidth());\r
 160             return {\r
 161                 field: f,\r
 162                 ddel: d\r
 163             };\r
 164         }\r
 165     },\r
 166 \r
 167 //  The coordinates to slide the drag proxy back to on failed drop.\r
 168     getRepairXY: function() {\r
 169         return this.dragData.field.getEl().getXY();\r
 170     }\r
 171 });\r
 172 \r
 173 Ext.onReady(function(){\r
 174 \r
 175     var myData = [\r
 176         ['3m Co',71.72,0.02,0.03,'9/1 12:00am'],\r
 177         ['Alcoa Inc',29.01,0.42,1.47,'9/1 12:00am'],\r
 178         ['Altria Group Inc',83.81,0.28,0.34,'9/1 12:00am'],\r
 179         ['American Express Company',52.55,0.01,0.02,'9/1 12:00am'],\r
 180         ['American International Group, Inc.',64.13,0.31,0.49,'9/1 12:00am'],\r
 181         ['AT&T Inc.',31.61,-0.48,-1.54,'9/1 12:00am'],\r
 182         ['Boeing Co.',75.43,0.53,0.71,'9/1 12:00am'],\r
 183         ['Caterpillar Inc.',67.27,0.92,1.39,'9/1 12:00am'],\r
 184         ['Citigroup, Inc.',49.37,0.02,0.04,'9/1 12:00am'],\r
 185         ['E.I. du Pont de Nemours and Company',40.48,0.51,1.28,'9/1 12:00am'],\r
 186         ['Exxon Mobil Corp',68.1,-0.43,-0.64,'9/1 12:00am'],\r
 187         ['General Electric Company',34.14,-0.08,-0.23,'9/1 12:00am'],\r
 188         ['General Motors Corporation',30.27,1.09,3.74,'9/1 12:00am'],\r
 189         ['Hewlett-Packard Co.',36.53,-0.03,-0.08,'9/1 12:00am'],\r
 190         ['Honeywell Intl Inc',38.77,0.05,0.13,'9/1 12:00am'],\r
 191         ['Intel Corporation',19.88,0.31,1.58,'9/1 12:00am'],\r
 192         ['International Business Machines',81.41,0.44,0.54,'9/1 12:00am'],\r
 193         ['Johnson & Johnson',64.72,0.06,0.09,'9/1 12:00am'],\r
 194         ['JP Morgan & Chase & Co',45.73,0.07,0.15,'9/1 12:00am'],\r
 195         ['McDonald\'s Corporation',36.76,0.86,2.40,'9/1 12:00am'],\r
 196         ['Merck & Co., Inc.',40.96,0.41,1.01,'9/1 12:00am'],\r
 197         ['Microsoft Corporation',25.84,0.14,0.54,'9/1 12:00am'],\r
 198         ['Pfizer Inc',27.96,0.4,1.45,'9/1 12:00am'],\r
 199         ['The Coca-Cola Company',45.07,0.26,0.58,'9/1 12:00am'],\r
 200         ['The Home Depot, Inc.',34.64,0.35,1.02,'9/1 12:00am'],\r
 201         ['The Procter & Gamble Company',61.91,0.01,0.02,'9/1 12:00am'],\r
 202         ['United Technologies Corporation',63.26,0.55,0.88,'9/1 12:00am'],\r
 203         ['Verizon Communications',35.57,0.39,1.11,'9/1 12:00am'],\r
 204         ['Wal-Mart Stores, Inc.',45.45,0.73,1.63,'9/1 12:00am']\r
 205     ];\r
 206 \r
 207     // example of custom renderer function\r
 208     function change(val){\r
 209         if(val > 0){\r
 210             return '<span style="color:green;">' + val + '</span>';\r
 211         }else if(val < 0){\r
 212             return '<span style="color:red;">' + val + '</span>';\r
 213         }\r
 214         return val;\r
 215     }\r
 216 \r
 217     // example of custom renderer function\r
 218     function pctChange(val){\r
 219         if(val > 0){\r
 220             return '<span style="color:green;">' + val + '%</span>';\r
 221         }else if(val < 0){\r
 222             return '<span style="color:red;">' + val + '%</span>';\r
 223         }\r
 224         return val;\r
 225     }\r
 226 \r
 227     // create the data store\r
 228     var store = new Ext.data.ArrayStore({\r
 229         fields: [\r
 230            {name: 'company'},\r
 231            {name: 'price', type: 'float'},\r
 232            {name: 'change', type: 'float'},\r
 233            {name: 'pctChange', type: 'float'},\r
 234            {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}\r
 235         ]\r
 236     });\r
 237     store.loadData(myData);\r
 238     \r
 239     var helpWindow = new Ext.Window({\r
 240         title: 'Source code',\r
 241         width: 920,\r
 242         height: 500,\r
 243         closeAction: 'hide',\r
 244         bodyCfg: {tag: 'textarea', readonly: true},\r
 245         bodyStyle: {\r
 246             backgroundColor: 'white',\r
 247             margin: '0px',\r
 248             border: '0px none'\r
 249         },\r
 250         listeners: {\r
 251             render: function(w) {\r
 252                 Ext.Ajax.request({\r
 253                     url: 'field-to-grid-dd.js',\r
 254                     success: function(r) {\r
 255                         w.body.dom.value = r.responseText;\r
 256                     }\r
 257                 });\r
 258             }\r
 259         }\r
 260     });\r
 261 \r
 262     // create the Grid\r
 263     var grid = new Ext.grid.GridPanel({\r
 264         store: store,\r
 265         columns: [\r
 266             {id:'company',header: "Company", width: 160, sortable: true, dataIndex: 'company'},\r
 267             {header: "Price", width: 75, sortable: true, renderer: 'usMoney', dataIndex: 'price'},\r
 268             {header: "Change", width: 75, sortable: true, renderer: change, dataIndex: 'change'},\r
 269             {header: "% Change", width: 75, sortable: true, renderer: pctChange, dataIndex: 'pctChange'},\r
 270             {header: "Last Updated", width: 85, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'}\r
 271         ],\r
 272         plugins: new Ext.ux.CellFieldDropZone(),\r
 273         stripeRows: true,\r
 274         autoExpandColumn: 'company',\r
 275         height:350,\r
 276         width:600,\r
 277         title:'Array Grid',\r
 278         bbar: new Ext.PagingToolbar({\r
 279             buttons: [{\r
 280                 text: 'View Source',\r
 281                 handler: function() {\r
 282                     helpWindow.show();\r
 283                 }\r
 284             }],\r
 285             store: store,\r
 286             pageSize: 25\r
 287         })\r
 288     });\r
 289 \r
 290     grid.render('grid-example');\r
 291     grid.getSelectionModel().selectFirstRow();\r
 292 \r
 293     var f = new Ext.Panel({\r
 294         frame: true,\r
 295         layout: 'form',\r
 296         width: 600,\r
 297         plugins: new Ext.ux.PanelFieldDragZone(),\r
 298         style: {\r
 299             'margin-top': '10px'\r
 300         },\r
 301         labelWidth: 150,\r
 302         items: [{\r
 303             xtype: 'textfield',\r
 304             fieldLabel: 'Drag this text',\r
 305             value: 'test'\r
 306         },{\r
 307             xtype: 'numberfield',\r
 308             fieldLabel: 'Drag this number',\r
 309             value: '1.2'\r
 310         },{\r
 311             xtype: 'datefield',\r
 312             fieldLabel: 'Drag this date',\r
 313             value: new Date()\r
 314         }],\r
 315         renderTo: Ext.getBody()\r
 316     });\r
 317 });</pre>    \r
 318 </body>\r
 319 </html>